Expanded-metal structure.



H. B. WHITE.

EXPANDED METAL STRUCTURE.

APPLICATION FILED MAR.17, 1910.

Patented May 30, 1911.

2 SHEETS-SHEET 1.

INVENTOQ w a). m

QMQQA.

WITNESSES H. E. WHITE.

EXPANDED METAL STRUCTURE.

APPLICATION FILED MAR.17, 1910.

M M M Patented May 30, 1911.

2 SHEETS-SHEET 2 INVENTOR 691111111.

WITNESSES HERBERT E. WHITE, OF YOUNGSTOWN, OHIO, ASSIGNOR TO THE GENERAL FIREPROOF- ING COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF OHIO.

EXPANDED-METAL STRUCTURE.

Specification of Letters Patent.

Patented May 30, 1911.

T 0 all whom it may concern:

Be it known that I, HERBERT E. WHITE,

-My present invention provides a struc-.

ture of this character in which these ribs, instead of being all turned or inclined in the same direction as in my said patent, are alternately inclined in opposite directions, and the slats of the intermediate slatted open-work portions have half bends or twists.

The object of my invention is, to provide a structure of this character which can be readily and cheaply made; which will possess increased strength, and which is admirably adapted to support a plaster or mortar when the structure is used for lathmg.

The nature of my invention will be bestunderstood by reference to the accompanying drawings, in which Figure l is a plan view showing a portion of a partially formed blank such as is employed with my invention. Fig. 2 is an end view of a blank ready for expansion; Fig. 3 is a section on the line IIIIII of Fig. 1 on an enlarged scale; Fig. 4 is a perspective view of a portion of the blank ready to be expanded; Fig. 5 is a plan view of a portion of the expanded structure; Fig. 6 is a section on the line VIVI of Fig. 5;

and Fig. 7 is a perspective View of a portion of the expanded structure.

According to my invention, the sheets or blanks from which the structures are to be formed are first cut or slitted in any usual or well known manner, to form a plurality of parallel slitted portions or areas, such as shown at 9 in Fig. these slitted portions or areas being separated from each other by intermediate unslitted portions or ribs 4-.

The oblique cuts or slits of adjacent areas extend in the opposite directions, as shown. Each slitted area is bent out of the general plane of the sheet or blank by the cutting die, the bends of adjacent areas being'in opposite directions with respect to said plane. These bends are of alternately concave and convex form, and extend across the entire width of each slitted area so that the slats of one slitted area are each bent downwardly below the general plane of the sheet, while the slats of the adjacent slitted area are all bent upwardly with respect to said plane. The character of this bending is clearly shown in Figs. 1, 2, 3 and 4.. This bending may be accomplished by any suit-v able arrangement of dies. By reason of these bends, the slats of adjacent slatted areas are given a tendency, whenthe sheet is expanded, to bend or twist in opposite directions, by reason of the initial bending points a, where the slats join the'ribs. After the blanks havebeen slitted and bent in this manner, they are expended in the usual way, forming a structure such asshown in Figs. 5, 6 and 7, in which the intermediate ribs 4 are substantially on edge, in planes which are greatly inclined to the general plane of the structure, adjacent ribs 4 being inclined in opposite directions, and the connecting slats each having a half bend or twist b therein, these bends or twists in adjacent series of slats being in opposite directions. The ribs 4 are caused to assume these oppositely inclined positions by reason of the tendency of the slats of adjacent slitted areas to bend or twist in this manner in opposite directions due to the bending before described. This will be readily understood when it is considered that by reason of the alternating convex and concave curvature of the slitted areas, the slats of one area will connect the lower edges of adjacent ribs (looking at the structure in plan), while the slats of the adjacent area will connect the upper edges of adjacent ribs, and the ends of the two series of slats which are joined to any one rib are turned or twisted in opposite directions. manner, I provide a structure which is of maximum stifiness due to the opposite bends or twists of adjacent series of slats and to the opposite inclination of adjacent ribs, and at the same time provide a structure which is admirably adapted for use as In this a metallic .lathing, since theribsform shelves or pockets to support and retain mortar.

'thilc in the drawings, I have illustrated a blank having fourslitted areas only, it will be understood that I may use blanks having any desired .nu'mber o'f slitted areas;

:and in practice the blanks are usually of considerable Width, and of any desired general plane of the structure, adjacent ribs being inclined in opposite directions, and the slats of adjacent slitted or open-Work portions or sections connecting opposite edge portions of said ribs, whereby such adjacent sections are offset- Wholly to opposite sides of the central fiat plane of the structure; substantially as described.

2. An expanded metal structure, co.mpris-. 'ing slitted open-work portions or sections, separated by ribs which are substantially on edge, that is to say, greatly inclined to the generalplane of the structure, and the slats connecting the ribs having half bends or twist-s therein adjacent slitted portions or sections being offset to oppositesides of the contra flat plane of the structure; substantially as described.

.3. An expanded metal structure, coniprising slitted open-work portions or sections,,

separated by ribs which are substantially on edge, that is to say, greatly inclined to the general plane of the structure, adjacent ribs being inclined in opposite directions, and the slats connecting the ribs having half described.

bonds or twists therein, the bends or twists ofadjaccnt series of slats being in opposite directions, and the slats of adjacent slitted or open-Work portions-or sections connecting opposite edge portions of said ribs, whereby such adjacent sections are offset Wholly to opposite sides of the centralfiatplane of the structure; substautiallyas described.

4. A blank for expanded metal structures,

consisting of alternately slitted and unslitted areas, each slittedarea having a curved'bend out of the central plane of the blank and "the unslitted portions being in the central (plane :of the blank; substantially as describe 5. A blank for expanded metal structures, consisting of alternately slitted and .unslitted areas, each slitted area havingiaicurved bend out of the central flat plane of the blank,

adjacent bendsbcing in opposite directions with respect to such plane; substantially as 6. A blank for expanded metal structures, consisting of alternately slitted and unslitted areas, the slitted areas being bent alternately to opposite sides of the central flat-plane of the blank; substantially as described.

7. An expanded metal structure comprising slitted open-work portions or sections,

separated by ribs which are substantially on edge, that is i0 say, greatly inclined to the general plane of the --structi-ire, adjacent ribs fbeing inclined in opposite directions, and the slats of the open-Work portions connecting the edge portions of the ribs, the slats of one section connecting the upper edge portions of adjacent ribs, andthe slats of anothersection connecting the lower edge portions of adjacent ribs; substantially as described.

In testimony whereof, I have hereunto set my hand.

HERBERT E. WHITE. iVitnesses:

H. R. GLENN, A. J. WATSON. 

